silicone seal well on silicone?

[JOMA]

i have a 20 gallon thats kinda old and when i got a 10 gallon the 10 gallon seemed to have a lot of silicone on the tank connecting the glass togethor. now that i see this i want to add some to my 20 gallon just to be safe but i dont want to take the silicone completely off so what if i just put some on the existing?


20 gallon tank:


20 gallon again but this silicone has i little missing:


10 gallon, see how it has thicker silicone?:


can i just put more on the 20 gallon?

[Greenmaster]

The silicone is more white then clear... I wouldn't really worry about it, unless the silicone on the 20g is starting to peel away... in that case I would take off the old silicone and redo the seams.

[BigJim]

New silicone doesn't stick to old silicone.

+1 for Greenmaster. No need to redo it unless it's coming off.

[JOMA]

if theres little holes in the silicone should i redo it?

[BigJim]

Only if it's leaking.

[JOMA]

okay im good with that, and just wondering what would cause th silicone to go bad?

[mgamer20o0]

doesnt look like there is a problem. like they said if its not leaking no need to replace it.

[JOMA]

okay good because i was freakin out a little bit, its in my bedroom which is the in the top floor of my room and my parents would KILL me if 20 gallons of water flooded my room and all!

plus i didnt want to go through all that crap to reseal it haha